... 轴式整流式：axial commutator 轴式测功器：shaft dynamometer 轴砂套圈：bearing race ...
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By developing the vertical DC dynamometer, the test of power and economic properties of vertical shaft engine is accomplished, which provides scientific basis for improving the performances.
通过研制立式直流电力测功机，实现对立轴发动机的动力和经济性能测试，为改进其性能提供科学依据。
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